Originally Posted by
Crankycrank
Do a search for "Fat bike rear hub axles" or "Single speed axles" in whatever length and threading you need. I've seen some up to at least 250mm long and most include the bearing cones, washers and nuts although you might want to retain the original cones for your hubs.
Ordering in progress.
I had to search for "Bolt on hub axle [value]mm"
Note: Width for hubs denoted distance between frame or fork, so a 190mm hub will need a much longer axle.
I ordered a 240mm axle just and will trim it down if necessary.
I also have a concern about the strength of the axle that I ordered, but time will tell.
Updates if anyone wants them.